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Learning effective representations in image-based environments is crucial for sample efficient Reinforcement Learning (RL). Unfortunately, in RL, representation learning is confounded with the exploratory experience of the agent -- learning…

机器学习 · 计算机科学 2021-07-21 Denis Yarats , Rob Fergus , Alessandro Lazaric , Lerrel Pinto

Contrastive language-image pretraining (CLIP) using image-text pairs has achieved impressive results on image classification in both zero-shot and transfer learning settings. However, we show that directly applying such models to recognize…

计算机视觉与模式识别 · 计算机科学 2021-12-17 Yiwu Zhong , Jianwei Yang , Pengchuan Zhang , Chunyuan Li , Noel Codella , Liunian Harold Li , Luowei Zhou , Xiyang Dai , Lu Yuan , Yin Li , Jianfeng Gao

Deep generative models with latent variables have been used lately to learn joint representations and generative processes from multi-modal data. These two learning mechanisms can, however, conflict with each other and representations can…

机器学习 · 计算机科学 2023-01-24 Rogelio A. Mancisidor , Michael Kampffmeyer , Kjersti Aas , Robert Jenssen

Contrastive image-text models such as CLIP form the building blocks of many state-of-the-art systems. While they excel at recognizing common generic concepts, they still struggle on fine-grained entities which are rare, or even absent from…

计算机视觉与模式识别 · 计算机科学 2024-02-22 Ahmet Iscen , Mathilde Caron , Alireza Fathi , Cordelia Schmid

Pre-trained models are nowadays a fundamental component of machine learning research. In continual learning, they are commonly used to initialize the model before training on the stream of non-stationary data. However, pre-training is…

机器学习 · 计算机科学 2022-05-20 Andrea Cossu , Tinne Tuytelaars , Antonio Carta , Lucia Passaro , Vincenzo Lomonaco , Davide Bacciu

Contrastive loss has been increasingly used in learning representations from multiple modalities. In the limit, the nature of the contrastive loss encourages modalities to exactly match each other in the latent space. Yet it remains an open…

机器学习 · 计算机科学 2023-03-13 Qian Jiang , Changyou Chen , Han Zhao , Liqun Chen , Qing Ping , Son Dinh Tran , Yi Xu , Belinda Zeng , Trishul Chilimbi

In previous works, neural sequence models have been shown to improve significantly if external prior knowledge can be provided, for instance by allowing the model to access the embeddings of explicit features during both training and…

计算与语言 · 计算机科学 2018-12-31 Cong Duy Vu Hoang , Ioan Calapodescu , Marc Dymetman

Contrastive Language-Image Pretraining (CLIP) stands out as a prominent method for image representation learning. Various neural architectures, spanning Transformer-based models like Vision Transformers (ViTs) to Convolutional Networks…

Prompt learning is a new learning paradigm which reformulates downstream tasks as similar pretraining tasks on pretrained models by leveraging textual prompts. Recent works have demonstrated that prompt learning is particularly useful for…

计算与语言 · 计算机科学 2022-10-21 Yue Zhang , Hongliang Fei , Dingcheng Li , Tan Yu , Ping Li

Joint embeddings between medical imaging modalities and associated radiology reports have the potential to offer significant benefits to the clinical community, ranging from cross-domain retrieval to conditional generation of reports to the…

机器学习 · 计算机科学 2018-11-28 Tzu-Ming Harry Hsu , Wei-Hung Weng , Willie Boag , Matthew McDermott , Peter Szolovits

Large pre-trained vision-language models such as CLIP have demonstrated great potential in zero-shot transferability to downstream tasks. However, to attain optimal performance, the manual selection of prompts is necessary to improve…

计算机视觉与模式识别 · 计算机科学 2024-09-17 Thi Minh Anh Pham , An Duc Nguyen , Cephas Svosve , Vasileios Argyriou , Georgios Tzimiropoulos

Recent advances in representation learning have demonstrated an ability to represent information from different modalities such as video, text, and audio in a single high-level embedding vector. In this work we present a self-supervised…

计算机视觉与模式识别 · 计算机科学 2021-06-11 Alexander H. Liu , SouYoung Jin , Cheng-I Jeff Lai , Andrew Rouditchenko , Aude Oliva , James Glass

Histo-genomic multimodal survival prediction has garnered growing attention for its remarkable model performance and potential contributions to precision medicine. However, a significant challenge in clinical practice arises when only…

机器学习 · 计算机科学 2025-03-17 Fengchun Liu , Linghan Cai , Zhikang Wang , Zhiyuan Fan , Jin-gang Yu , Hao Chen , Yongbing Zhang

We present an approach to learn voice-face representations from the talking face videos, without any identity labels. Previous works employ cross-modal instance discrimination tasks to establish the correlation of voice and face. These…

声音 · 计算机科学 2022-05-30 Boqing Zhu , Kele Xu , Changjian Wang , Zheng Qin , Tao Sun , Huaimin Wang , Yuxing Peng

Prompt learning has been designed as an alternative to fine-tuning for adapting Vision-language (V-L) models to the downstream tasks. Previous works mainly focus on text prompt while visual prompt works are limited for V-L models. The…

计算机视觉与模式识别 · 计算机科学 2024-08-06 Chen Xu , Yuhan Zhu , Haocheng Shen , Boheng Chen , Yixuan Liao , Xiaoxin Chen , Limin Wang

Using visual model-based learning for deformable object manipulation is challenging due to difficulties in learning plannable visual representations along with complex dynamic models. In this work, we propose a new learning framework that…

机器学习 · 计算机科学 2020-03-12 Wilson Yan , Ashwin Vangipuram , Pieter Abbeel , Lerrel Pinto

Radiology report generation (RRG) aims to describe automatically a radiology image with human-like language and could potentially support the work of radiologists, reducing the burden of manual reporting. Previous approaches often adopt an…

计算机视觉与模式识别 · 计算机科学 2022-07-12 Jun Wang , Abhir Bhalerao , Yulan He

In standard large vision-language models (LVLMs) pre-training, the model typically maximizes the joint probability of the caption conditioned on the image via next-token prediction (NTP); however, since only a small subset of caption tokens…

计算机视觉与模式识别 · 计算机科学 2025-05-15 Yangyi Chen , Hao Peng , Tong Zhang , Heng Ji

Deep learning models have achieved great success on various vision challenges, but a well-trained model would face drastic performance degradation when applied to unseen data. Since the model is sensitive to domain shift, unsupervised…

计算机视觉与模式识别 · 计算机科学 2025-10-24 Ziyu Ye , Chen Ju , Chaofan Ma , Xiaoyun Zhang

Harnessing the power of pre-training on large-scale datasets like ImageNet forms a fundamental building block for the progress of representation learning-driven solutions in computer vision. Medical images are inherently different from…

计算机视觉与模式识别 · 计算机科学 2023-08-01 Jeya Maria Jose Valanarasu , Yucheng Tang , Dong Yang , Ziyue Xu , Can Zhao , Wenqi Li , Vishal M. Patel , Bennett Landman , Daguang Xu , Yufan He , Vishwesh Nath